Cosmic Shear and its Redshift Evolution from the Deep Lens Survey

Details Cosmic Shear and its Redshift Evolution from the Deep Lens Survey Cosmic Shear and its Redshift Evolution from the Deep Lens Survey

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20922508m&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #225.08; Bulletin of the American Astronomical Society,

Physics

Scientific paper

The Deep Lens Survey (DLS; http://dls.physics.ucdavis.edu/) is a ultra-deep multi-band (BVRz) optical survey of 20 square degrees, which an observation scheme that maximizes lensing measurements, while providing color information. From the best seeing images we derive shape measurements, and from the multi-band observations we estimate photometric redshifts with an uncertainty of 10% in (1+z) per galaxy. After 5 years ( 120 nights) of observations with mosaic CCD imagers at NOAO's Blanco and Mayall 4-meter telescopes, we have very recently completed data acquisition for the survey.
In 2005, we presented the first cosmic shear results from the DLS, based on one or our five 4-square degree fields. Here we present measurement of cosmic shear and its redshift evolution from the entire 20 square degree survey.

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